Happiness is at your feet, if only you are willing to lower your head and look for it.
The great secret that all old people share is that you really haven't changed in seventy or eighty years. Your body changes, but you don't change at all. And that, of course, causes great confusion.
天文学的美在于它能够将我们与浩瀚的宇宙连接起来。
Education is not just about building schools, but about ensuring children actually learn.